RT Journal Article
ID 5fd0322a38047258
A1 Rodrigues, Christian M. G.
A1 Barata, Jorge 
A1 Silva, Andre 
T1 LIQUID FILM DYNAMIC ON THE SPRAY IMPINGEMENT MODELING
JF Atomization and Sprays
JO AAS
YR 2012
FD 2013-01-29
VO 22
IS 9
SP 757
OP 775
K1 spray impingement
K1 droplets-wall interaction
K1 liquid film
K1 splash regime
AB The present paper addresses a liquid film submodel included into a computational model that aims at reproducing the spray impingement phenomena. This numerical extension incorporates the spread of the liquid film over the neighboring nodes due to the dynamic motion induced by the film inertia and also the exchange of mass between the liquid layer and the incident and splashing particles. Moreover, a dimensionless film thickness parameter is embedded in the submodel by mean of an experimentally deduced correlation that can be fitted and updated to specified conditions. In order to realize how the model behaves with different influencing parameters, a thorough investigation is performed: the results that are obtained with and without the inclusion of the liquid film submodel are compared against the experimental data for two crossflow velocities. The integration of the computational extension with the spread/splash transition criterion is also evaluated by considering two types of expressions: one that includes the effect of the film thickness and one that does not. The results show that the latter option combined with the submodel does not distinctly enhance the simulation results, contrary to what happens with the transition criterion that considers the film thickness as an influencing parameter. In this case, the model with the computational extension reveals better prediction results, which indicates the necessity of considering it for spray impingement simulations along with a splash threshold that depends on the liquid layer.
PB Begell House
LK https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,64b3d5d415f8eb91,5fd0322a38047258.html